EESchema Schematic File Version 4
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Device:Opamp_Dual_Generic U1
U 2 1 5C54CA7D
P 4150 5500
AR Path="/5C54CA7D" Ref="U1"  Part="2" 
AR Path="/5C06F581/5C54CA7D" Ref="U?"  Part="2" 
AR Path="/5C0574B7/5C54CA7D" Ref="U?"  Part="1" 
AR Path="/5C05A497/5C54CA7D" Ref="U?"  Part="2" 
F 0 "U1" H 4150 5200 50  0000 C CNN
F 1 "LM4562" H 4200 5300 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 4150 5500 50  0001 C CNN
F 3 "~" H 4150 5500 50  0001 C CNN
	2    4150 5500
	1    0    0    1   
$EndComp
$Comp
L Device:Opamp_Dual_Generic U1
U 1 1 5C54CA84
P 4150 3650
AR Path="/5C54CA84" Ref="U1"  Part="1" 
AR Path="/5C06F581/5C54CA84" Ref="U?"  Part="3" 
AR Path="/5C0574B7/5C54CA84" Ref="U?"  Part="2" 
AR Path="/5C05A497/5C54CA84" Ref="U?"  Part="1" 
F 0 "U1" H 4200 3350 50  0000 C CNN
F 1 "LM4562" H 4250 3450 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 4150 3650 50  0001 C CNN
F 3 "~" H 4150 3650 50  0001 C CNN
	1    4150 3650
	1    0    0    1   
$EndComp
$Comp
L Device:R RA2
U 1 1 5C54CA8C
P 3400 3550
AR Path="/5C54CA8C" Ref="RA2"  Part="1" 
AR Path="/5C06F581/5C54CA8C" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CA8C" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CA8C" Ref="R?"  Part="1" 
F 0 "RA2" V 3600 3550 50  0000 C CNN
F 1 "10k|0|open" V 3500 3550 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical" V 3330 3550 50  0001 C CNN
F 3 "~" H 3400 3550 50  0001 C CNN
F 4 "Metallfilm" V 3400 3550 50  0001 C CNN "Notes"
	1    3400 3550
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3850 3550 3800 3550
$Comp
L Device:R RA1
U 1 1 5C54CA95
P 4150 3200
AR Path="/5C54CA95" Ref="RA1"  Part="1" 
AR Path="/5C06F581/5C54CA95" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CA95" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CA95" Ref="R?"  Part="1" 
F 0 "RA1" V 4357 3200 50  0000 C CNN
F 1 "10k|10k|0" V 4266 3200 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 4080 3200 50  0001 C CNN
F 3 "~" H 4150 3200 50  0001 C CNN
F 4 "Metallfilm" V 4150 3200 50  0001 C CNN "Notes"
	1    4150 3200
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4450 3650 4450 3200
Wire Wire Line
	4450 3200 4300 3200
Wire Wire Line
	4000 3200 3800 3200
Wire Wire Line
	3800 3200 3800 3550
Wire Wire Line
	3800 3550 3550 3550
Connection ~ 3800 3550
Text Notes 4300 3200 0    50   ~ 0
v = -R2/R1
$Comp
L Device:R RA3
U 1 1 5C54CAA4
P 3400 3750
AR Path="/5C54CAA4" Ref="RA3"  Part="1" 
AR Path="/5C06F581/5C54CAA4" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAA4" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAA4" Ref="R?"  Part="1" 
F 0 "RA3" V 3300 3750 50  0000 C CNN
F 1 "10k|1k|10k" V 3200 3750 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3330 3750 50  0001 C CNN
F 3 "~" H 3400 3750 50  0001 C CNN
F 4 "Metallfilm" V 3400 3750 50  0001 C CNN "Notes"
	1    3400 3750
	0    -1   -1   0   
$EndComp
$Comp
L Device:R RA5
U 1 1 5C54CAAC
P 3650 4150
AR Path="/5C54CAAC" Ref="RA5"  Part="1" 
AR Path="/5C06F581/5C54CAAC" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAAC" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAAC" Ref="R?"  Part="1" 
F 0 "RA5" V 3857 4150 50  0000 C CNN
F 1 "10k|open|open" V 3766 4150 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3580 4150 50  0001 C CNN
F 3 "~" H 3650 4150 50  0001 C CNN
F 4 "Metallfilm" V 3650 4150 50  0001 C CNN "Notes"
	1    3650 4150
	1    0    0    -1  
$EndComp
Wire Wire Line
	3550 3750 3650 3750
Connection ~ 3650 3750
Wire Wire Line
	3250 3750 3100 3750
$Comp
L Device:R RA4
U 1 1 5C54CAB9
P 3100 4150
AR Path="/5C54CAB9" Ref="RA4"  Part="1" 
AR Path="/5C06F581/5C54CAB9" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAB9" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAB9" Ref="R?"  Part="1" 
F 0 "RA4" V 3350 4050 50  0000 C CNN
F 1 "10|0|open" V 3250 4050 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical" V 3030 4150 50  0001 C CNN
F 3 "~" H 3100 4150 50  0001 C CNN
F 4 "Metallfilm" V 3100 4150 50  0001 C CNN "Notes"
	1    3100 4150
	1    0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR0102
U 1 1 5C54CAC0
P 3100 4300
AR Path="/5C54CAC0" Ref="#PWR0102"  Part="1" 
AR Path="/5C06F581/5C54CAC0" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CAC0" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CAC0" Ref="#PWR?"  Part="1" 
F 0 "#PWR0102" H 3100 4050 50  0001 C CNN
F 1 "GNDA" H 3105 4127 50  0000 C CNN
F 2 "" H 3100 4300 50  0001 C CNN
F 3 "" H 3100 4300 50  0001 C CNN
	1    3100 4300
	1    0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR0103
U 1 1 5C54CAC6
P 3650 4300
AR Path="/5C54CAC6" Ref="#PWR0103"  Part="1" 
AR Path="/5C06F581/5C54CAC6" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CAC6" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CAC6" Ref="#PWR?"  Part="1" 
F 0 "#PWR0103" H 3650 4050 50  0001 C CNN
F 1 "GNDA" H 3655 4127 50  0000 C CNN
F 2 "" H 3650 4300 50  0001 C CNN
F 3 "" H 3650 4300 50  0001 C CNN
	1    3650 4300
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x02_Male JA2
U 1 1 5C54CACC
P 2900 3800
AR Path="/5C54CACC" Ref="JA2"  Part="1" 
AR Path="/5C06F581/5C54CACC" Ref="J?"  Part="1" 
AR Path="/5C0574B7/5C54CACC" Ref="J?"  Part="1" 
AR Path="/5C05A497/5C54CACC" Ref="J?"  Part="1" 
F 0 "JA2" H 2950 3550 50  0000 C CNN
F 1 "Jumper" H 2950 3650 50  0000 C CNN
F 2 "Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm" H 2900 3800 50  0001 C CNN
F 3 "~" H 2900 3800 50  0001 C CNN
	1    2900 3800
	1    0    0    -1  
$EndComp
Wire Wire Line
	3100 4000 3100 3900
Wire Wire Line
	3100 3800 3100 3750
Wire Wire Line
	3650 3750 3650 4000
$Comp
L Device:R RB2
U 1 1 5C54CAD8
P 3400 5400
AR Path="/5C54CAD8" Ref="RB2"  Part="1" 
AR Path="/5C06F581/5C54CAD8" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAD8" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAD8" Ref="R?"  Part="1" 
F 0 "RB2" V 3607 5400 50  0000 C CNN
F 1 "10k|0|open" V 3516 5400 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal" V 3330 5400 50  0001 C CNN
F 3 "~" H 3400 5400 50  0001 C CNN
F 4 "Metallfilm" V 3400 5400 50  0001 C CNN "Notes"
	1    3400 5400
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4000 5050 3800 5050
Wire Wire Line
	3800 5050 3800 5400
Connection ~ 3800 5400
$Comp
L Device:R RB3
U 1 1 5C54CAE4
P 3400 5600
AR Path="/5C54CAE4" Ref="RB3"  Part="1" 
AR Path="/5C06F581/5C54CAE4" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAE4" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAE4" Ref="R?"  Part="1" 
F 0 "RB3" V 3300 5600 50  0000 C CNN
F 1 "10k|1k|10k" V 3200 5600 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical" V 3330 5600 50  0001 C CNN
F 3 "~" H 3400 5600 50  0001 C CNN
F 4 "Metallfilm" V 3400 5600 50  0001 C CNN "Notes"
	1    3400 5600
	0    -1   -1   0   
$EndComp
$Comp
L Device:R RB5
U 1 1 5C54CAEC
P 3650 6000
AR Path="/5C54CAEC" Ref="RB5"  Part="1" 
AR Path="/5C06F581/5C54CAEC" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAEC" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAEC" Ref="R?"  Part="1" 
F 0 "RB5" V 3857 6000 50  0000 C CNN
F 1 "10k|open|open" V 3766 6000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3580 6000 50  0001 C CNN
F 3 "~" H 3650 6000 50  0001 C CNN
F 4 "Metallfilm" V 3650 6000 50  0001 C CNN "Notes"
	1    3650 6000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3550 5600 3650 5600
Connection ~ 3650 5600
$Comp
L Device:R RB4
U 1 1 5C54CAF8
P 3150 6000
AR Path="/5C54CAF8" Ref="RB4"  Part="1" 
AR Path="/5C06F581/5C54CAF8" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CAF8" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CAF8" Ref="R?"  Part="1" 
F 0 "RB4" V 3400 5950 50  0000 C CNN
F 1 "10|0|open" V 3300 5900 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3080 6000 50  0001 C CNN
F 3 "~" H 3150 6000 50  0001 C CNN
F 4 "Metallfilm" V 3150 6000 50  0001 C CNN "Notes"
	1    3150 6000
	1    0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR0104
U 1 1 5C54CAFF
P 3150 6150
AR Path="/5C54CAFF" Ref="#PWR0104"  Part="1" 
AR Path="/5C06F581/5C54CAFF" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CAFF" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CAFF" Ref="#PWR?"  Part="1" 
F 0 "#PWR0104" H 3150 5900 50  0001 C CNN
F 1 "GNDA" H 3155 5977 50  0000 C CNN
F 2 "" H 3150 6150 50  0001 C CNN
F 3 "" H 3150 6150 50  0001 C CNN
	1    3150 6150
	1    0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR0105
U 1 1 5C54CB05
P 3650 6150
AR Path="/5C54CB05" Ref="#PWR0105"  Part="1" 
AR Path="/5C06F581/5C54CB05" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CB05" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CB05" Ref="#PWR?"  Part="1" 
F 0 "#PWR0105" H 3650 5900 50  0001 C CNN
F 1 "GNDA" H 3655 5977 50  0000 C CNN
F 2 "" H 3650 6150 50  0001 C CNN
F 3 "" H 3650 6150 50  0001 C CNN
	1    3650 6150
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x02_Male JB1
U 1 1 5C54CB0B
P 2950 5650
AR Path="/5C54CB0B" Ref="JB1"  Part="1" 
AR Path="/5C06F581/5C54CB0B" Ref="J?"  Part="1" 
AR Path="/5C0574B7/5C54CB0B" Ref="J?"  Part="1" 
AR Path="/5C05A497/5C54CB0B" Ref="J?"  Part="1" 
F 0 "JB1" H 3000 5400 50  0000 C CNN
F 1 "Jumper" H 3000 5500 50  0000 C CNN
F 2 "Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm" H 2950 5650 50  0001 C CNN
F 3 "~" H 2950 5650 50  0001 C CNN
	1    2950 5650
	1    0    0    -1  
$EndComp
Wire Wire Line
	3150 5850 3150 5750
Wire Wire Line
	3150 5650 3150 5600
Wire Wire Line
	3650 5600 3650 5850
Wire Wire Line
	3800 5400 3850 5400
Wire Wire Line
	3650 5600 3850 5600
$Comp
L Device:R RB1
U 1 1 5C54CB19
P 4150 5050
AR Path="/5C54CB19" Ref="RB1"  Part="1" 
AR Path="/5C06F581/5C54CB19" Ref="R?"  Part="1" 
AR Path="/5C0574B7/5C54CB19" Ref="R?"  Part="1" 
AR Path="/5C05A497/5C54CB19" Ref="R?"  Part="1" 
F 0 "RB1" V 4357 5050 50  0000 C CNN
F 1 "10k|10k|0" V 4266 5050 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 4080 5050 50  0001 C CNN
F 3 "~" H 4150 5050 50  0001 C CNN
F 4 "Metallfilm" V 4150 5050 50  0001 C CNN "Notes"
	1    4150 5050
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4450 5500 4450 5050
Wire Wire Line
	4450 5050 4300 5050
Text Notes 2200 4200 0    50   ~ 0
Connect JA2 for \nunbalanced\ninput signal\nand on summing stage
Connection ~ 4450 3650
$Comp
L Device:Opamp_Dual_Generic U1
U 3 1 5C54CB24
P 1400 1400
AR Path="/5C54CB24" Ref="U1"  Part="3" 
AR Path="/5C06F581/5C54CB24" Ref="U?"  Part="1" 
AR Path="/5C0574B7/5C54CB24" Ref="U?"  Part="3" 
AR Path="/5C05A497/5C54CB24" Ref="U?"  Part="3" 
F 0 "U1" H 1400 1550 50  0000 L CNN
F 1 "LM4562" H 1400 1250 50  0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 1400 1400 50  0001 C CNN
F 3 "~" H 1400 1400 50  0001 C CNN
	3    1400 1400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C1
U 1 1 5C54CB2B
P 1100 1250
AR Path="/5C54CB2B" Ref="C1"  Part="1" 
AR Path="/5C06F581/5C54CB2B" Ref="CU1+?"  Part="1" 
AR Path="/5C0574B7/5C54CB2B" Ref="CU1+?"  Part="1" 
AR Path="/5C05A497/5C54CB2B" Ref="CU1+?"  Part="1" 
F 0 "C1" H 750 1300 50  0000 L CNN
F 1 "100n" H 800 1200 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 1138 1100 50  0001 C CNN
F 3 "~" H 1100 1250 50  0001 C CNN
	1    1100 1250
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 1750 1300 1700
Wire Wire Line
	1300 1100 1300 1050
$Comp
L power:GNDA #PWR0106
U 1 1 5C54CB34
P 900 1400
AR Path="/5C54CB34" Ref="#PWR0106"  Part="1" 
AR Path="/5C06F581/5C54CB34" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CB34" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CB34" Ref="#PWR?"  Part="1" 
F 0 "#PWR0106" H 900 1150 50  0001 C CNN
F 1 "GNDA" H 905 1227 50  0000 C CNN
F 2 "" H 900 1400 50  0001 C CNN
F 3 "" H 900 1400 50  0001 C CNN
	1    900  1400
	1    0    0    -1  
$EndComp
$Comp
L Device:C C2
U 1 1 5C54CB3A
P 1100 1550
AR Path="/5C54CB3A" Ref="C2"  Part="1" 
AR Path="/5C06F581/5C54CB3A" Ref="CU1-?"  Part="1" 
AR Path="/5C0574B7/5C54CB3A" Ref="CU1-?"  Part="1" 
AR Path="/5C05A497/5C54CB3A" Ref="CU1-?"  Part="1" 
F 0 "C2" H 800 1400 50  0000 L CNN
F 1 "100n" H 850 1300 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 1138 1400 50  0001 C CNN
F 3 "~" H 1100 1550 50  0001 C CNN
	1    1100 1550
	1    0    0    -1  
$EndComp
Wire Wire Line
	1100 1700 1300 1700
Wire Wire Line
	900  1400 1100 1400
Connection ~ 1100 1400
Wire Wire Line
	1100 1100 1300 1100
$Comp
L power:+15V #PWR0107
U 1 1 5C54CB45
P 1300 1050
AR Path="/5C54CB45" Ref="#PWR0107"  Part="1" 
AR Path="/5C06F581/5C54CB45" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CB45" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CB45" Ref="#PWR?"  Part="1" 
F 0 "#PWR0107" H 1300 900 50  0001 C CNN
F 1 "+15V" H 1315 1223 50  0000 C CNN
F 2 "" H 1300 1050 50  0001 C CNN
F 3 "" H 1300 1050 50  0001 C CNN
	1    1300 1050
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR0108
U 1 1 5C54CB4B
P 1300 1750
AR Path="/5C54CB4B" Ref="#PWR0108"  Part="1" 
AR Path="/5C06F581/5C54CB4B" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5C54CB4B" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5C54CB4B" Ref="#PWR?"  Part="1" 
F 0 "#PWR0108" H 1300 1850 50  0001 C CNN
F 1 "-15V" H 1315 1923 50  0000 C CNN
F 2 "" H 1300 1750 50  0001 C CNN
F 3 "" H 1300 1750 50  0001 C CNN
	1    1300 1750
	-1   0    0    1   
$EndComp
Text Notes 2200 6050 0    50   ~ 0
Connect JB1 for \nunbalanced\ninput signal\nand on summing stage
Connection ~ 4450 5500
Connection ~ 1300 1700
Connection ~ 1300 1100
Text Notes 3950 4350 0    50   ~ 0
For output stage configuration:\nRA3,RB3=Rlow for minimum offset error\ndue to input bias current.\nRlow = R1//R2//R3 ... (inputs)
Wire Wire Line
	3650 3750 3850 3750
$Comp
L Device:R RA6
U 1 1 5CA39C35
P 4900 3650
AR Path="/5CA39C35" Ref="RA6"  Part="1" 
AR Path="/5C06F581/5CA39C35" Ref="RA?"  Part="1" 
AR Path="/5C0574B7/5CA39C35" Ref="RA?"  Part="1" 
AR Path="/5C05A497/5CA39C35" Ref="RA?"  Part="1" 
F 0 "RA6" V 5107 3650 50  0000 C CNN
F 1 "0|0|220" V 5016 3650 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical" V 4830 3650 50  0001 C CNN
F 3 "~" H 4900 3650 50  0001 C CNN
F 4 "Metallfilm" V 4900 3650 50  0001 C CNN "Notes"
	1    4900 3650
	0    -1   -1   0   
$EndComp
$Comp
L Device:R RB6
U 1 1 5CA3D551
P 4900 5500
AR Path="/5CA3D551" Ref="RB6"  Part="1" 
AR Path="/5C06F581/5CA3D551" Ref="RA?"  Part="1" 
AR Path="/5C0574B7/5CA3D551" Ref="RA?"  Part="1" 
AR Path="/5C05A497/5CA3D551" Ref="RA?"  Part="1" 
F 0 "RB6" V 5107 5500 50  0000 C CNN
F 1 "0|0|220" V 5016 5500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 4830 5500 50  0001 C CNN
F 3 "~" H 4900 5500 50  0001 C CNN
F 4 "Metallfilm" V 4900 5500 50  0001 C CNN "Notes"
	1    4900 5500
	0    -1   -1   0   
$EndComp
Text Notes 4300 2750 0    50   ~ 0
Lowpass (optional):\nf_c =    1 /\n     (2 * Pi * R * C)
$Comp
L Device:C ClpA1
U 1 1 5CA42A5F
P 4150 2800
F 0 "ClpA1" V 3898 2800 50  0000 C CNN
F 1 "330p" V 3989 2800 50  0000 C CNN
F 2 "Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm" H 4188 2650 50  0001 C CNN
F 3 "~" H 4150 2800 50  0001 C CNN
	1    4150 2800
	0    1    1    0   
$EndComp
Wire Wire Line
	4300 2800 4450 2800
Wire Wire Line
	4450 2800 4450 3200
Connection ~ 4450 3200
Wire Wire Line
	4000 2800 3800 2800
Wire Wire Line
	3800 2800 3800 3200
Connection ~ 3800 3200
$Comp
L Device:C ClpB1
U 1 1 5CA46ED4
P 4150 4700
F 0 "ClpB1" V 3898 4700 50  0000 C CNN
F 1 "330p" V 3989 4700 50  0000 C CNN
F 2 "Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm" H 4188 4550 50  0001 C CNN
F 3 "~" H 4150 4700 50  0001 C CNN
	1    4150 4700
	0    1    1    0   
$EndComp
Wire Wire Line
	4300 4700 4450 4700
Wire Wire Line
	4450 4700 4450 5050
Connection ~ 4450 5050
Wire Wire Line
	4000 4700 3800 4700
Wire Wire Line
	3800 4700 3800 5050
Connection ~ 3800 5050
Text GLabel 2150 3550 1    50   Input ~ 0
inA-
Text GLabel 2100 3750 1    50   Input ~ 0
inA+
Text GLabel 5250 3650 2    50   Input ~ 0
outA
Text GLabel 5250 5500 2    50   Input ~ 0
outB
Wire Wire Line
	5050 3650 5250 3650
Wire Wire Line
	5250 5500 5050 5500
Connection ~ 3100 3750
Text GLabel 1950 5400 1    50   Input ~ 0
inB-
Text GLabel 2000 5600 3    50   Input ~ 0
inB+
Connection ~ 3150 5600
Wire Wire Line
	3150 5600 3250 5600
Text Notes 900  2800 0    50   ~ 0
For output stage\ninA+ and inB+ are GND\n
Text Notes 750  3150 0    50   ~ 0
If multiple component values given separated by "|"\nfirst value for input buffer,\nsecond value for group summing configuration,\nthird value for output buffer
Wire Wire Line
	4450 3650 4750 3650
Wire Wire Line
	4450 5500 4750 5500
Wire Wire Line
	3550 5400 3800 5400
Text Notes 2300 3550 0    50   ~ 0
smaller pad\non baseplate
Text Notes 2000 5400 0    50   ~ 0
smaller pad\non baseplate
$Comp
L Connector_Generic:Conn_01x02 in_A1
U 1 1 5DB4907B
P 1400 3700
F 0 "in_A1" H 1320 3375 50  0000 C CNN
F 1 "Conn_01x02" H 1320 3466 50  0000 C CNN
F 2 "footprints:coax_solder_pad_flipped" H 1400 3700 50  0001 C CNN
F 3 "~" H 1400 3700 50  0001 C CNN
	1    1400 3700
	-1   0    0    1   
$EndComp
Wire Wire Line
	1600 3550 1600 3600
Wire Wire Line
	1600 3550 3250 3550
Wire Wire Line
	1600 3700 1600 3750
Wire Wire Line
	1600 3750 3100 3750
$Comp
L Connector_Generic:Conn_01x02 in_B1
U 1 1 5DB5F0AA
P 1350 5550
F 0 "in_B1" H 1270 5225 50  0000 C CNN
F 1 "Conn_01x02" H 1270 5316 50  0000 C CNN
F 2 "footprints:coax_solder_pad_flipped" H 1350 5550 50  0001 C CNN
F 3 "~" H 1350 5550 50  0001 C CNN
	1    1350 5550
	-1   0    0    1   
$EndComp
Wire Wire Line
	1600 5400 1600 5450
Wire Wire Line
	1600 5450 1550 5450
Wire Wire Line
	1600 5400 3250 5400
Wire Wire Line
	1550 5550 1600 5550
Wire Wire Line
	1600 5550 1600 5600
Wire Wire Line
	1600 5600 3150 5600
$Comp
L Connector_Generic:Conn_01x02 out_B1
U 1 1 5DB6E651
P 5850 5750
F 0 "out_B1" H 5769 5425 50  0000 C CNN
F 1 "Conn_01x02" H 5769 5516 50  0000 C CNN
F 2 "footprints:coax_solder_pad" H 5850 5750 50  0001 C CNN
F 3 "~" H 5850 5750 50  0001 C CNN
	1    5850 5750
	1    0    0    1   
$EndComp
Wire Wire Line
	5650 5650 5250 5650
Wire Wire Line
	5250 5650 5250 5500
$Comp
L power:GNDA #PWR0122
U 1 1 5DB767F0
P 5650 5750
AR Path="/5DB767F0" Ref="#PWR0122"  Part="1" 
AR Path="/5C06F581/5DB767F0" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5DB767F0" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5DB767F0" Ref="#PWR?"  Part="1" 
F 0 "#PWR0122" H 5650 5500 50  0001 C CNN
F 1 "GNDA" H 5655 5577 50  0000 C CNN
F 2 "" H 5650 5750 50  0001 C CNN
F 3 "" H 5650 5750 50  0001 C CNN
	1    5650 5750
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x02 out_A1
U 1 1 5DB7682D
P 5850 3850
F 0 "out_A1" H 5769 3525 50  0000 C CNN
F 1 "Conn_01x02" H 5769 3616 50  0000 C CNN
F 2 "footprints:coax_solder_pad" H 5850 3850 50  0001 C CNN
F 3 "~" H 5850 3850 50  0001 C CNN
	1    5850 3850
	1    0    0    1   
$EndComp
Wire Wire Line
	5650 3750 5250 3750
Wire Wire Line
	5250 3750 5250 3650
$Comp
L power:GNDA #PWR0123
U 1 1 5DB7AA6A
P 5650 3850
AR Path="/5DB7AA6A" Ref="#PWR0123"  Part="1" 
AR Path="/5C06F581/5DB7AA6A" Ref="#PWR?"  Part="1" 
AR Path="/5C0574B7/5DB7AA6A" Ref="#PWR?"  Part="1" 
AR Path="/5C05A497/5DB7AA6A" Ref="#PWR?"  Part="1" 
F 0 "#PWR0123" H 5650 3600 50  0001 C CNN
F 1 "GNDA" H 5655 3677 50  0000 C CNN
F 2 "" H 5650 3850 50  0001 C CNN
F 3 "" H 5650 3850 50  0001 C CNN
	1    5650 3850
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J6
U 1 1 5DB7B12D
P 2450 1150
F 0 "J6" H 2530 1192 50  0000 L CNN
F 1 "Conn_01x01" H 2530 1101 50  0000 L CNN
F 2 "footprints:edge_solderstrip_th" H 2450 1150 50  0001 C CNN
F 3 "~" H 2450 1150 50  0001 C CNN
	1    2450 1150
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J7
U 1 1 5DB83778
P 2450 1350
F 0 "J7" H 2530 1392 50  0000 L CNN
F 1 "Conn_01x01" H 2530 1301 50  0000 L CNN
F 2 "footprints:edge_solderstrip_th" H 2450 1350 50  0001 C CNN
F 3 "~" H 2450 1350 50  0001 C CNN
	1    2450 1350
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J8
U 1 1 5DB837C8
P 2450 1550
F 0 "J8" H 2530 1592 50  0000 L CNN
F 1 "Conn_01x01" H 2530 1501 50  0000 L CNN
F 2 "footprints:edge_solderstrip_th" H 2450 1550 50  0001 C CNN
F 3 "~" H 2450 1550 50  0001 C CNN
	1    2450 1550
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR0124
U 1 1 5DB838E1
P 2250 1150
F 0 "#PWR0124" H 2250 1250 50  0001 C CNN
F 1 "-15V" H 2265 1323 50  0000 C CNN
F 2 "" H 2250 1150 50  0001 C CNN
F 3 "" H 2250 1150 50  0001 C CNN
	1    2250 1150
	0    -1   -1   0   
$EndComp
$Comp
L power:GNDA #PWR0125
U 1 1 5DB83960
P 2250 1350
F 0 "#PWR0125" H 2250 1100 50  0001 C CNN
F 1 "GNDA" H 2255 1177 50  0000 C CNN
F 2 "" H 2250 1350 50  0001 C CNN
F 3 "" H 2250 1350 50  0001 C CNN
	1    2250 1350
	0    1    1    0   
$EndComp
$Comp
L power:+15V #PWR0126
U 1 1 5DB839C2
P 2250 1550
F 0 "#PWR0126" H 2250 1400 50  0001 C CNN
F 1 "+15V" H 2265 1723 50  0000 C CNN
F 2 "" H 2250 1550 50  0001 C CNN
F 3 "" H 2250 1550 50  0001 C CNN
	1    2250 1550
	0    -1   -1   0   
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J9
U 1 1 5DB83BB9
P 3650 1150
F 0 "J9" H 3730 1192 50  0000 L CNN
F 1 "Conn_01x01" H 3730 1101 50  0000 L CNN
F 2 "footprints:edge_solderstrip_th" H 3650 1150 50  0001 C CNN
F 3 "~" H 3650 1150 50  0001 C CNN
	1    3650 1150
	-1   0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J10
U 1 1 5DB83BC0
P 3650 1350
F 0 "J10" H 3730 1392 50  0000 L CNN
F 1 "Conn_01x01" H 3730 1301 50  0000 L CNN
F 2 "footprints:edge_solderstrip_th" H 3650 1350 50  0001 C CNN
F 3 "~" H 3650 1350 50  0001 C CNN
	1    3650 1350
	-1   0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J11
U 1 1 5DB83BC7
P 3650 1550
F 0 "J11" H 3730 1592 50  0000 L CNN
F 1 "Conn_01x01" H 3730 1501 50  0000 L CNN
F 2 "footprints:edge_solderstrip_th" H 3650 1550 50  0001 C CNN
F 3 "~" H 3650 1550 50  0001 C CNN
	1    3650 1550
	-1   0    0    -1  
$EndComp
$Comp
L power:-15V #PWR0127
U 1 1 5DB83BCE
P 3850 1150
F 0 "#PWR0127" H 3850 1250 50  0001 C CNN
F 1 "-15V" H 3865 1323 50  0000 C CNN
F 2 "" H 3850 1150 50  0001 C CNN
F 3 "" H 3850 1150 50  0001 C CNN
	1    3850 1150
	0    1    -1   0   
$EndComp
$Comp
L power:GNDA #PWR0128
U 1 1 5DB83BD4
P 3850 1350
F 0 "#PWR0128" H 3850 1100 50  0001 C CNN
F 1 "GNDA" H 3855 1177 50  0000 C CNN
F 2 "" H 3850 1350 50  0001 C CNN
F 3 "" H 3850 1350 50  0001 C CNN
	1    3850 1350
	0    -1   1    0   
$EndComp
$Comp
L power:+15V #PWR0129
U 1 1 5DB83BDA
P 3850 1550
F 0 "#PWR0129" H 3850 1400 50  0001 C CNN
F 1 "+15V" H 3865 1723 50  0000 C CNN
F 2 "" H 3850 1550 50  0001 C CNN
F 3 "" H 3850 1550 50  0001 C CNN
	1    3850 1550
	0    1    -1   0   
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J1
U 1 1 5DB902E7
P 2400 1900
F 0 "J1" H 2480 1942 50  0000 L CNN
F 1 "Conn_01x01" H 2480 1851 50  0000 L CNN
F 2 "footprints:edge_solderstrip_th" H 2400 1900 50  0001 C CNN
F 3 "~" H 2400 1900 50  0001 C CNN
	1    2400 1900
	-1   0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J2
U 1 1 5DB90363
P 2400 2050
F 0 "J2" H 2480 2092 50  0000 L CNN
F 1 "Conn_01x01" H 2480 2001 50  0000 L CNN
F 2 "footprints:edge_solderstrip_th" H 2400 2050 50  0001 C CNN
F 3 "~" H 2400 2050 50  0001 C CNN
	1    2400 2050
	-1   0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR0130
U 1 1 5DB9046F
P 2700 2050
F 0 "#PWR0130" H 2700 1800 50  0001 C CNN
F 1 "GNDA" H 2705 1877 50  0000 C CNN
F 2 "" H 2700 2050 50  0001 C CNN
F 3 "" H 2700 2050 50  0001 C CNN
	1    2700 2050
	1    0    0    -1  
$EndComp
Wire Wire Line
	2700 1900 2600 1900
Wire Wire Line
	2600 2050 2700 2050
Connection ~ 2700 2050
Wire Wire Line
	2700 2050 2700 1900
$EndSCHEMATC